The EK Series is the most efficient heat exchanger offered in the water cooled series of shell and tube exchangers from Thermal Transfer. The aluminum finned tube bundle design provides an extended surface area that allows for efficient heat rejection with low water usage. During start-up, we can offer an optional Surge-Cushion® bypass protection for cold starts or flow surges. Sea water service options are also available. The low cost, compact design is ideal for general purpose hydraulic power unit or lower viscosity clean oil installations.